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| Titel |
Gamma-ray emitting supernova remnants as the origin of Galactic cosmic rays |
| VerfasserIn |
M. Kroll, J. Becker Tjus, B. Eichmann, N. Nierstenhöfer |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2199-3955
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| Digitales Dokument |
URL |
| Erschienen |
In: ASTRA Proceedings ; 2, no. 2 ; Nr. 2, no. 2 (2015-11-12), S.57-62 |
| Datensatznummer |
250115173
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| Publikation (Nr.) |
 copernicus.org/ap-2-57-2015.pdf |
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| Zusammenfassung |
| It is generally believed that the cosmic ray spectrum below the knee is of
Galactic origin, although the exact sources making up the entire cosmic ray
energy budget are still unknown. Including effects of magnetic amplification,
Supernova Remnants (SNR) could be capable of accelerating cosmic rays up to a
few PeV and they represent the only source class with a sufficient
non-thermal energy budget to explain the cosmic ray spectrum up to the knee.
Now, gamma-ray measurements of SNRs for the first time allow to derive the
cosmic ray spectrum at the source, giving us a first idea of the concrete,
possible individual contributions to the total cosmic ray spectrum. In this
contribution, we use these features as input parameters for propagating
cosmic rays from its origin to Earth using GALPROP in order to investigate if
these supernova remnants reproduce the cosmic ray spectrum and if supernova
remnants in general can be responsible for the observed energy budget. |
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